We have already suggested that he try to do an OW however he insists that he cannot do without even trying. I assure you that if you tried and posted your work, people would help you, as other artists do. What's more, being OW of official characters, sooner or later some designer will do...

Aki, I made some overworld effects, like Grass, Water Bubble and Shadow Overworld. If you want:
https://www.pokecommunity.com/showthread.php?t=421411
https://www.pokecommunity.com/showthread.php?t=421475
https://www.pokecommunity.com/showthread.php?t=421467
P.S: I would like to post these...

Always being modest with your scripts. Of course it was and is a great script! When I managed to fix the "bug" to stop BGM or BGS for compatibility with following pokemon script, it was amazing! I am using and recommend you all to use too.

You have to many custom script, maybe you need to fix some of them. Your error is nothing about the code than i made. I made a new code pbDeleteitem, called by 'pbDeleteItemToEvolve(item,qty=400)', nothing about your error.

Because you didn't read the code:
#Don't change
FOLLOWER_FILE_PATH = "Graphics/Characters/"
#The subfolder where your follower sprites are located
#Has to be within Graphics/Characters
FOLLOWER_FILE_DIR = ""
You need to put all OW sprites into Character Folder.